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Finding the Fourth Proportional to 70,985.28, 97,959.46 and 40,772.55

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Solution

The fourth proportional to 70,985.28, 97,959.46 and 40,772.55 is: 56,265.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,985.28 : 97,959.46 = 40,772.55 : x
  2. Step 2: Convert to fraction form
    70,985.28/97,959.46 = 40,772.55/x
  3. Step 3: Cross multiply
    70,985.28x = 97,959.46 × 40,772.55
  4. Step 4: Simplify right side
    70,985.28x = 3,994,056,980.82
  5. Step 5: Solve for x
    x = 3,994,056,980.82/70,985.28
  6. Step 6: Final answer
    x = 56,265.99

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